Our population model \(\pi (\eta |\Lambda )\)  describes the astrophysical distribution of masses, redshifts, and spins. We model the primary mass distribution with the Powerlaw + Peak model [1]}, the mass ratio (\(q\) ) distribution with a power law, and the redshift distribution also with a power law, with source-frame comoving merger rate density \(R(z) \propto (1 + z)^3\)  [2]}, [3]}, [4]}. We list the hyperparameters \(\Lambda \)  and their corresponding priors in Table REF .
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